package heima;





import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class Demo06 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//        准备一个数据
        String username = "zhangsan";
        //        获取ServletContext对象
//        方式一
        ServletContext servletContext = getServletContext();

//        添加数据
        Object user = servletContext.getAttribute("user");
        System.out.println(user);
//        方式二
////        获取全局配置信息
//        String encoding = servletContext.getInitParameter("encoding");
//        System.out.println(encoding);
    }
}


